scholarly journals An airborne gamma-ray spectrometry data processing manual giving information of the data collected by the Geological Survey of Canada gamma-ray spectrometer system

1972 ◽  
Author(s):  
R L Grasty
Keyword(s):  
Data Processing ◽  
Gamma Ray ◽  
Geological Survey ◽  
Gamma Ray Spectrometry ◽  
Gamma Ray Spectrometer ◽  
Spectrometer System

scholarly journals Study of the minimum detectable activity in gamma-ray spectrometry with various shielding configurations

2017 ◽  
Vol 1 (T4) ◽  
pp. 56-62
Author(s):  
Vuong Quang Le ◽  
Nguyen Hoang Vo ◽  
Chuong Dinh Huynh ◽  
Phuc Minh Lau ◽  
Thanh Thien Tran ◽  
...  
Keyword(s):  
Environmental Samples ◽  
Gamma Ray ◽  
Background Radiation ◽  
Environmental Radioactivity ◽  
Minimum Detectable Activity ◽  
The Other ◽  
Gamma Ray Spectrometry ◽  
Gamma Spectrometer ◽  
Detectable Activity ◽  
Gamma Ray Spectrometer

In the environmental radioactivity analyzing methods using gamma-ray spectrometry, the natural activities of radionuclides were required to be higher than the minimum detectable activity (MDA). To reduce MDA, one of the popular methods is to improve the ability of reducing the background radiation of the gamma-ray spectrometry. In this work, we designed the shielding configuration with 5 cm lead and 2 mm copper (thickness of walls and top). The MDAs of gamma-ray spectrometer were 2.6–4.24 times times for 40K (1460.8 keV), 232Th (208Tl- 2614.5 keV) and 238U (214Pb- 352 keV; 214Bi- 609.3 keV, 214Bi- 1764.5 keV). In the other hand, MDA for 238U with this shielding configuration is smaller than the activity of 238U inside surface soils in Vietnam. These results showed that the gamma spectrometer with NaI(Tl) detector and this shielding configuration was suitable for measurements activity of 238U in the environmental samples.

Use of 214Pb Photopeaks for Radon Removal: Utilising Current Airborne Gamma-Ray Spectrometer Technology and Data Processing

2005 ◽  
Vol 36 (3) ◽  
pp. 322-328 ◽  
Author(s):  
Pavel Jurza ◽  
Ian Campbell ◽  
Philip Robinson ◽  
Rainer Wackerle ◽  
Pat Cunneen ◽  
...  
Keyword(s):  
Data Processing ◽  
Gamma Ray ◽  
Gamma Ray Spectrometer

Total Absorption Gamma Ray Spectrometer System for Pulsed Beam n, n′ γ Measurements

1966 ◽  
Vol 37 (11) ◽  
pp. 1559-1562 ◽  
Author(s):  
John B. Ashe ◽  
Ira Lon Morgan ◽  
J. D. Hall
Keyword(s):  
Gamma Ray ◽  
Total Absorption ◽  
Gamma Ray Spectrometer ◽  
Spectrometer System

scholarly journals Method for identifying areas of virgin soils using a portable gamma-spectrometer-dosimeter

2020 ◽  
Vol 13 (2) ◽  
pp. 123-128
Author(s):  
V. P. Ramzaev ◽  
A. N. Barkovsky
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Gamma Spectrometer ◽  
External Radiation ◽  
Quantitative Criterion ◽  
Undisturbed Soil ◽  
Basic Model ◽  
Gamma Ray Spectrometer ◽  
Starting Point

The dose rate of gamma radiation in air at a height of 1 m above the surface of virgin (undisturbed) soil is the starting point in the basic model that is used to estimate the dose of external radiation to the population living in areas contaminated due to the Chernobyl accident. Today, i.e. more than 30 years after the fallout, the finding of truly virgin lands is a rather difficult task, because many meadows were repeatedly plowed and/or rehabilitated after the accident. The purpose of this study was to develop a quantitative criterion for the detection of virgin soil areas using a portable gamma-ray spectrometer-dosimeter. To achieve this, we have conducted a statistical analysis of published and new data on the use of in situ gamma-ray spectrometry in radioactively contaminated territories of the Bryansk region of Russia and the Gomel region of Belarus in 2015–2018. The sample contains results of decoding 60 gamma spectra recorded at a height of 1 m above the ground in virgin meadows, cultivated lands and forests. Based on the performed analysis, a quantitative dosimetric criterion is proposed for in situ identification of virgin soils using a portable gamma-spectrometer-dosimeter. The article presents an algorithm for searching a virgin plot.

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